There are very few car rental places that pick up and deliver rental cars. Avis is one of the few that will pick up and deliver a rental car, but only within five miles of their neighborhood. It is best to find an Avis near you.
Among those car rental services that do not deliver are Budget and Enterprise and the majority of other well known car rental services. However, many of these do offer to pick you up from your local residence
or hotel, and bring you to the local branch and then when you return the rental car they will deliver you back to the address you request.
It is very difficult to find a rental car service willing to pick up or deliver rental cars to your location. Most prefer to send a van or car to pick you up so that you may be taken to the local branch to choose your rental car.
There are those that do not provide this server at all. It would be your responsibility to get to the rental location to pick up a car. At some of the larger airports around the United States, the rental car agencies are located right in the airport, or very near it, these will usually offer a pick up location at the airport to transport you to their local branch. It is best to reserve your rental car especially when traveling so that it will be available upon your arrival at your destination.
The rental agencies that are near the airport will usually offer to have a shuttle take you to the airport upon the returning the rental car to the company. You may request this ahead of time and ask for a schedule of when the shuttles transport passengers to the airport.
